Please I need the answers! Find the volume of each pyramid with the given values.

1. A four-sided pyramid with base edge of 5 ft and h = 4 ft.

2. A four-sided pyramid with base edge of 10 ft and h = 7 ft.

3. A four-sided pyramid with base edge of 8 yds and h = 9 yds.

4. A four-sided pyramid with base edge of 20 ft and h = 15 ft.

5. A four-sided pyramid with base edge of 11 in and h = 20 in.

This question doesn’t make any sense

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!